Ambles will be teamed up with Deontay Greenberry who had 47 receptions for 569 yards and three touchdowns for the Cougars last season

From CBSSports.com:

The 6-foot-3 Ambles, who played in 2012 in junior college at Arizona Western, will arrive at Houston this summer and will be eligible this fall. He will have two seasons of eligibility remaining.
While at USC, Ambles, an Atlanta native, battled maturity issues. He was also declared academically ineligible for the 2011 season before he ultimately left Los Angeles after catching one pass for three yards in 2010.